Stack, Alexander R
Current rating: 1441
Record: 16-20-1
| Grand Prix Pittsburgh 2013 (GTC limited) | starting rating: 1451 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 530 | Steen, Brant (1500) | Won 2-0 | +191470 |
| 2sealed | 17 | King, David (1498) | Won 2-0 | +191489 |
| 3sealed | 172 | Holzworth, Michael (1579) | Lost 0-2 | -171472 |
| 4sealed | 309 | Fetto, Joshua (1557) | Won 2-0 | +201492 |
| 5sealed | 212 | Smilo, Stephen (1539) | Lost 0-2 | -171475 |
| 6sealed | 260 | Lo, Eugene (1552) | Lost 0-2 | -171458 |
| 7sealed | 356 | Fulks, Franklin (1497) | Lost 0-2 | -171441 |
| top | average opponent: 1532record: 3-4 | new rating: 1441 | ||
| Grand Prix Nashville 2012 (DKA limited) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 226 | Fox, Cathy (1482) | Draw 1-1 | +11447 |
| 2sealed | 265 | Balderston, Mark (1500) | Won 2-1 | +191466 |
| 3sealed | 187 | Yampolsky, Ben (1466) | Lost 1-2 | -181448 |
| 4sealed | 357 | Prephan, David (1466) | Won 2-0 | +181466 |
| 5sealed | 268 | Ward, Phillip J (1450) | Lost 0-2 | -181448 |
| 6sealed | 319 | Brower, Dominic (1518) | Lost 1-2 | -171431 |
| 7sealed | 296 | Phillips, Jon B (1481) | Won 2-0 | +191450 |
| 8sealed | 226 | Blanton, Will (1499) | Won 2-0 | +191469 |
| 9sealed | 172 | Wallace, Kevin (1505) | Lost 0-2 | -181451 |
| top | average opponent: 1485record: 4-4-1 | new rating: 1451 | ||
| Grand Prix Baltimore 2012 (DKA standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 129 | Downing, Bruce (1500) | Won 2-0 | +181518 |
| 2standard | 166 | Gonzalez, Brendon M (1551) | Lost 1-2 | -181500 |
| 3standard | 373 | Swick, Scott (1484) | Lost 1-2 | -181482 |
| 4standard | 668 | McElmurray, Philip (1482) | Lost 0-2 | -181464 |
| 5standard | 639 | Fairbanks, Joe (1464) | Lost 1-2 | -181446 |
| top | average opponent: 1496record: 1-4 | new rating: 1446 | ||
| Grand Prix Pittsburgh 2011 (M12 standard) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 257 | Staton, Branch (1476) | Lost 0-2 | -191500 |
| 2standard | 452 | Whitlow, Patrick (1482) | Won 2-0 | +181518 |
| 3standard | 394 | Duterte, Daniel (1608) | Lost 0-2 | -171501 |
| 4standard | 635 | Shoff, Roger (1482) | Won 2-0 | +181519 |
| 5standard | 485 | Oveson, Clayton (1504) | Won 2-0 | +181537 |
| 6standard | 419 | Fuentes, Joaquin (1505) | Lost 1-2 | -191518 |
| 7standard | 334 | WALLACE, JOHN (1498) | Lost 0-2 | -181500 |
| top | average opponent: 1508record: 3-4 | new rating: 1500 | ||
| Grand Prix Providence 2011 (legacy) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 483 | Collins, Peter A (1481) | Won 2-1 | +181518 |
| 2legacy | 528 | Mccormick, Brandon (1500) | Won 2-0 | +171535 |
| 3legacy | 405 | Craumer, Dan (1538) | Won 2-1 | +181553 |
| 4legacy | 450 | Baboussis, George (1539) | Lost 1-2 | -181535 |
| 5legacy | 463 | Aquino, Marc (1517) | Lost 0-2 | -181517 |
| 6legacy | 499 | Szelzki, Jeffrey (1595) | Won 2-1 | +191536 |
| 7legacy | 489 | Williams, William (1448) | Lost 0-2 | -191517 |
| 8legacy | 522 | Van Tosh, Michael (1521) | Won 2-0 | +181535 |
| 9legacy | 468 | Cicio, Joshua (1643) | Lost 1-2 | -161519 |
| top | average opponent: 1531record: 5-4 | new rating: 1519 | ||